CN104727748B - A kind of jetting type twisting drag reduction oscillator - Google Patents

A kind of jetting type twisting drag reduction oscillator Download PDF

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Publication number
CN104727748B
CN104727748B CN201510172360.4A CN201510172360A CN104727748B CN 104727748 B CN104727748 B CN 104727748B CN 201510172360 A CN201510172360 A CN 201510172360A CN 104727748 B CN104727748 B CN 104727748B
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CN
China
Prior art keywords
pressure
moment
runner
torque piston
shell
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CN201510172360.4A
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Chinese (zh)
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CN104727748A (en
Inventor
不公告发明人
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北京沃客石油工程技术研究院
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Priority to CN201510172360.4A priority Critical patent/CN104727748B/en
Publication of CN104727748A publication Critical patent/CN104727748A/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/24Drilling using vibrating or oscillating means, e.g. out-of-balance masses

Abstract

The invention discloses a kind of jetting type twisting drag reduction oscillator, it is related to drilling technology field.The oscillator includes top connection, outer shell, upper end cover, bistable fluidic, alternating pressure runner, moment of torsion cylinder, torque piston, bearing, fixture block, drill sleeve;The outer cylinder interior sets gradually the upper end cover, bistable fluidic, alternating pressure runner, moment of torsion cylinder, torque piston, bearing;The upper end of the outer shell is connected through a screw thread with the top connection, and lower end is connected by described fixture block with the drill sleeve.The embodiment of the present invention can extend the service life of drill bit by corresponding structure design, improve the efficiency of breaking rock of PDC drill bit.

Description

A kind of jetting type twisting drag reduction oscillator
Technical field
The present invention relates to a kind of drilling technology field, and in particular to a kind of jetting type twisting drag reduction oscillator.
Background technology
The development that is worked with oil-gas exploration and deeply, in deep drilling and western many block hard formation drilling processes In, rate of penetration is low, and the problem such as bit life is short is protruded very much.Such as in Sulige area, STRUCTURES IN EAST SICHUAN oil field, Tarim Basin All encountered compared with hard formation in being worked Deng exploration and development drilling well, when creeping into above-mentioned stratum using PDC drill bit, especially in deep-well Block sliding effect in drilling process extremely serious.The card slides effect and enables the irregular release of the elasticity of torsion of accumulation in drill string, Causing the rock break-off process of PDC drill bit becomes extremely unstable, accelerates PDC drill bit is improper to damage, reduces the use longevity of PDC drill bit Life, while can also influence the rate of penetration in drilling process, reduces drilling efficiency.
The content of the invention
In view of the above-mentioned problems, the embodiments of the invention provide a kind of jetting type twisting drag reduction oscillator, it is intended to solve existing PDC drill bit service life in technology caused by the sliding effect of card is short, and the low technical problem of drilling efficiency.
To achieve the above object there is provided a kind of jetting type twisting drag reduction oscillator, the jetting type twisting drag reduction concussion Device include top connection, outer shell, upper end cover, bistable fluidic, alternating pressure runner, moment of torsion cylinder, torque piston, bearing, card it is fast, Drill sleeve;The outer cylinder interior sets gradually the upper end cover, bistable fluidic, alternating pressure runner, moment of torsion cylinder, moment of torsion and lived Plug and bearing;The upper end of the outer shell is connected through a screw thread with the top connection, lower end by described card soon with the drill bit Set connection;The upper end cover is located at the bistable fluidic upper end, and central passage and the entrance of the bistable fluidic connect It is logical;The bistable fluidic is provided with two Efferent tubes, and the both sides of two Efferent tubes are respectively arranged with emptying road;The bistable jet member The upper end UNICOM that two Efferent tubes of part pass through nozzle and the alternating pressure runner;Set vertically in the alternating pressure runner Be equipped with two high pressure runners and a low pressure runner, the first ends of two high pressure runners respectively with the bistable fluidic Two Efferent tubes be connected, the second end of two high pressure runners is connected with the moment of torsion cylinder;The torque piston is arranged on In the moment of torsion cylinder;It is axially disposed in the middle part of the torque piston to have a center flow channels;The first end of the low pressure runner and institute State the center flow channels connection of torque piston;Second end of the low pressure runner is connected with the emptying road of the bistable fluidic; The drill sleeve is connected by screw thread with drill bit.
Further, the twice high-pressure fluid that the alternating pressure runner is exported by flow manifold to bistable fluidic Shunted respectively, per pass high-pressure fluid is divided into relative twice high-pressure fluid, the four road high-pressure fluids formed after shunting exist It is circularly and evenly distributed on alternating pressure flow channel cross-section, the fluid in relative position occurs simultaneously, and the stream of adjacent position Body is alternately present, and the shunting road high-pressure fluids of Hou tetra-, which are entered in moment of torsion cylinder, acts on torque piston.
Further, the moment of torsion cylinder is fixed in outer shell, is provided with and alternating pressure stream between moment of torsion cylinder and torque piston Four cavitys of the four road high-pressure fluid connections formed after road shunting, when the high-pressure fluid of a certain relative position of alternating pressure runner During appearance, the effect of torque piston liquid body pressure starts to rotate along some direction, rotates to after certain position, the relative position High-pressure fluid is disappeared, and the high-pressure fluid of another relative position replaces, and now torque piston is started edge by Fluid pressure effect Opposite direction is rotated, and bearing is provided between the moment of torsion cylinder and torque piston so that torque piston rotates more flexible.
Further, the torque piston is connected by tooth shape structure with drill sleeve, when torque piston rotates, passes through tooth shape Structural impact drill sleeve, driving drill sleeve rotation.
Further, the outer shell is connected with drill sleeve by fixture block.
Further, spring is provided between the fixture block and drill sleeve, bolt is provided between the fixture block and outer shell.
Further, sealing ring is provided between the alternating pressure runner and outer shell.
Further, sealing ring is provided between the outer shell and drill sleeve.
Compared with prior art, the embodiments of the invention provide a kind of jetting type twisting drag reduction oscillator, by providing one Kind can reduce the sliding effect of card can improve the instrument of bit speed again, solve the PDC drill bit caused by the sliding effect of card and use the longevity Life is short, and the low technical problem of drilling efficiency, and the embodiment of the present invention extends the service life of drill bit, accelerates PDC drill bit Broken rock speed, improve drilling efficiency.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram of jetting type twisting drag reduction oscillator provided in an embodiment of the present invention;
Fig. 2 is a kind of jetting type twisting drag reduction oscillator alternating pressure runner fairing cap structure provided in an embodiment of the present invention Schematic diagram;
Fig. 3 is that a kind of jetting type twisting drag reduction oscillator alternating pressure runner base arrangement provided in an embodiment of the present invention shows It is intended to;
Fig. 4 is that a kind of jetting type twisting drag reduction oscillator moment of torsion cylinder provided in an embodiment of the present invention shows with torque piston section It is intended to;
Wherein, 1, top connection;2nd, outer shell;3rd, upper end cover;4th, bistable fluidic;41st, road is emptied;42nd, high pressure runner; 43rd, high pressure runner;5th, alternating pressure runner;51st, alternating pressure runner fairing cap;511st, low-pressure inlet 1;512nd, low-pressure inlet 2; 513rd, high pressure entry 1;514th, high pressure entry 2;515th, fairing cap center flow channels;52 alternating pressure runner bottom plates;521st, distribute Mouth 1;522nd, shunting outlet 2;523rd, shunting outlet 3;524th, shunting outlet 4;525th, bottom plate center flow channels;6th, moment of torsion cylinder;7th, turn round Square piston;8th, bearing;9th, fixture block;91st, spring;92nd, bolt;10th, drill sleeve;11st, sealing ring;12nd, sealing ring;13rd, cavity 1; 14th, cavity 2;15th, cavity 3;16th, cavity 4;17th, torque piston center flow channels.
Embodiment
Come to carry out the present invention detailed description below in conjunction with accompanying drawing.It should be appreciated, however, that accompanying drawing has been provided only more Understand the present invention well, they should not be interpreted as limitation of the present invention.
As shown in figure 1, Fig. 1 is a kind of jetting type twisting drag reduction oscillator provided in an embodiment of the present invention.Refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the jetting type twisting drag reduction oscillator include top connection, outer shell, upper end cover, bistable fluidic, alternation Pressure runner, moment of torsion cylinder, torque piston, bearing, card are fast, drill sleeve;The outer cylinder interior sets gradually the upper end cover, bistable Fluidic, alternating pressure runner, moment of torsion cylinder, torque piston and bearing;The upper end of the outer shell passes through spiral shell with the top connection Line is connected, and lower end is connected with the drill sleeve soon by described card;The upper end cover is located at the bistable fluidic upper end, Central passage is connected with the entrance of the bistable fluidic;The bistable fluidic is provided with two Efferent tubes, two Efferent tubes Both sides are respectively arranged with emptying road;Two Efferent tubes of the bistable fluidic are upper by nozzle and the alternating pressure runner End UNICOM;It is axially disposed in the alternating pressure runner to have two high pressure runners and a low pressure runner, it is described two high Two Efferent tubes of the first end of runner respectively with the bistable fluidic are pressed to be connected, the second end of two high pressure runners Connected with the moment of torsion cylinder;The torque piston is arranged in the moment of torsion cylinder;It is axially disposed in the middle part of the torque piston to have One center flow channels;The first end of the low pressure runner is connected with the center flow channels of the torque piston;The of the low pressure runner Two ends are connected with the emptying road of the bistable fluidic;The drill sleeve is connected by screw thread with drill bit.
Compared with prior art, the embodiments of the invention provide a kind of jetting type twisting drag reduction oscillator, by providing one Kind can reduce the sliding effect of card can improve the instrument of bit speed again, solve the PDC drill bit caused by the sliding effect of card and use the longevity Life is short, and the low technical problem of drilling efficiency, and the embodiment of the present invention extends the service life of drill bit, accelerates PDC drill bit Broken rock speed, improve drilling efficiency.
The present invention is by top connection 1, outer shell 2, upper end cover 3, bistable fluidic 4, alternating pressure runner 5, moment of torsion cylinder 6, torsion Square piston 7, bearing 8, fixture block 9, drill sleeve 10 are constituted;The upper end cover 1, bistable jet member are set gradually inside the outer shell 2 Part 4, alternating pressure runner 5, moment of torsion cylinder 6, torque piston 7 and bearing 8;The upper end of the outer shell 2 passes through spiral shell with the top connection 1 Line is connected, and lower end is connected by described fixture block 9 with the drill sleeve 10;The upper end cover 3 is located at the bistable fluidic 4 Upper end, central passage is connected with the entrance of the bistable fluidic 4;The bistable fluidic 4 is provided with two Efferent tubes, and two is defeated The both sides engaged in this profession are respectively arranged with emptying road;Two Efferent tubes of the bistable fluidic 4 pass through nozzle and the alternating pressure The upper end UNICOM of runner 5;It is axially disposed in the alternating pressure runner 5 to have two high pressure runners 513,514 and one low Runner 515 is pressed, two Efferent tubes of the first ends of two high pressure runners 513,514 respectively with the bistable fluidic are connected Logical, the second end of two high pressure runners is changed into 4 outlets 521,522,523,524,4 outlets at bottom plate 52 521st, 522,523,524 4 cavitys 13,14,15,16 respectively between the moment of torsion cylinder 6 and the torque piston 7 are connected; The torque piston 7 is arranged in the moment of torsion cylinder 6;The middle part of torque piston 7 is axially disposed a center flow channels 17;Institute The first end of low pressure runner is stated to connect with the center flow channels 17 of the torque piston;Second end of the low pressure runner with it is described double The emptying road connection of steady fluidic;The drill sleeve 10 is connected (not shown) by screw thread with drill bit.
As the further improvement of the embodiment of the present invention, the alternating pressure runner 5 is by flow manifold to bistable jet The twice high-pressure fluid that element 4 is exported is shunted respectively, and per pass high-pressure fluid is divided into relative twice high-pressure fluid, shunting The four road high-pressure fluids formed afterwards are circularly and evenly distributed on the cross section of alternating pressure runner 5, the fluid in relative position Occur simultaneously, and the fluid of adjacent position is alternately present, the shunting road high-pressure fluids of Hou tetra-, which are entered, acts on torsion in moment of torsion cylinder 6 Square piston 7.
As the further improvement of the embodiment of the present invention, the moment of torsion cylinder 6 is fixed in outer shell 2, and moment of torsion cylinder 6 is lived with moment of torsion Four cavitys that the four road high-pressure fluids formed after being shunted with alternating pressure runner 5 are connected are provided between plug 7, when alternating pressure stream When the high-pressure fluid of a certain relative position in road 5 occurs, the effect of the liquid body pressure of torque piston 7 starts to rotate along some direction, revolves Go to after certain position, the high-pressure fluid of the relative position disappears, and the high-pressure fluid of another relative position replaces, now turned round Square piston 7 is started to rotate in the reverse direction by Fluid pressure effect, and bearing 8 is provided between the moment of torsion cylinder 6 and torque piston 7, is made Obtain torque piston 7 and rotate more flexible.
As the further improvement of the embodiment of the present invention, the torque piston 7 is connected by tooth shape structure with drill sleeve 10, When torque piston 7 rotates, by tooth shape structural impact drill sleeve 10, driving drill sleeve 10 rotates.
As the further improvement of the embodiment of the present invention, the outer shell 2 is connected with drill sleeve 10 by fixture block 9.
As the further improvement of the embodiment of the present invention, spring 91, the card are provided between the fixture block 9 and drill sleeve 10 Bolt 92 is provided between block 9 and outer shell 2.
As the further improvement of the embodiment of the present invention, sealing ring is provided between the alternating pressure runner 5 and outer shell 2.
As the further improvement of the embodiment of the present invention, sealing ring is provided between the outer shell 2 and drill sleeve 10.
The present invention is operationally:Alternating pressure, the twice high pressure of output are produced when high-pressure fluid is by bistable fluidic 4 Fluid enters alternating pressure runner 5 by runner 42,43, and twice high-pressure fluid completes shape after shunting in alternating pressure runner 5 Cheng Sidao high-pressure fluids, the four roads high-pressure fluid is circularly and evenly distributed on the cross section of alternating pressure runner 5, in relative position The fluid put occurs simultaneously, and the fluid of adjacent position is alternately present, while being provided with four between moment of torsion cylinder 6 and torque piston 7 The cavity being circularly and evenly distributed, the high-pressure fluid of relative position can enter the cavity of relative position.When the high pressure of relative position When fluid enters the cavity of relative position, because moment of torsion cylinder 6 is fixed in outer shell 2 so that torque piston 7 is driven by high-pressure fluid And rotated in moment of torsion cylinder 6 along a direction, now torque piston drives drill sleeve 10 by tooth shape structural impact drill sleeve 10 Rotate in same direction, when the high-pressure fluid of adjacent position enters the cavity of adjacent position, the high-pressure spray of script relative position Body is changed into low-pressure fluid, and now torque piston 7 is driven by high-pressure fluid and rotated in another direction in moment of torsion cylinder 6, moment of torsion Piston 7 drives drill sleeve 10 to rotate in the opposite direction, is so concatenated to form certain frequency by tooth shape structural impact drill sleeve 10 Circumferential reciprocal concussion.In the course of work, the low-pressure fluid discharged from moment of torsion cylinder 6 returns to bistable fluidic 4, and passes through row Low pressure runner is entered back into after the empty entrance of road 41 low pressure chamber to discharge from drill sleeve 10 through center flow channels.
The present invention is due to taking above technical scheme, and it has advantages below:The present invention can pass through in drilling process The high-pressure fluid driving torque piston of alternation back and forth shakes in moment of torsion cylinder, and the card that can reduce PDC drill bit slides effect, improves PDC Bit operation environment, promotes PDC drill bit steady operation, extends the service life of drill bit, and accelerates PDC drill bit broken rock speed.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that the present invention is implemented not by aforesaid way Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is employed, or without changing Enter and the design of the present invention and technical scheme are directly applied into other occasions, within protection scope of the present invention.

Claims (6)

1. a kind of jetting type twisting drag reduction oscillator, it is characterised in that the oscillator includes top connection, outer shell, upper end cover, double Steady fluidic, alternating pressure runner, moment of torsion cylinder, torque piston, bearing, fixture block, drill sleeve;The outer cylinder interior is set gradually The upper end cover, bistable fluidic, alternating pressure runner, moment of torsion cylinder, torque piston and bearing;The upper end of the outer shell and institute State top connection to be connected through a screw thread, lower end is connected by described fixture block with the drill sleeve;The upper end cover is located at described double Steady fluidic upper end, central passage is connected with the entrance of the bistable fluidic;The bistable fluidic is defeated provided with two Engage in this profession, the both sides of two Efferent tubes are respectively arranged with emptying road;Two Efferent tubes of the bistable fluidic pass through nozzle and described The upper end UNICOM of alternating pressure runner;It is axially disposed in the alternating pressure runner to have two high pressure runners and a low pressure Runner, two Efferent tubes of the first ends of two high pressure runners respectively with the bistable fluidic are connected, described two Second end of high pressure runner is connected with the moment of torsion cylinder;The torque piston is arranged in the moment of torsion cylinder;The torque piston Middle part is axially disposed a center flow channels;The first end of the low pressure runner is connected with the center flow channels of the torque piston; Second end of the low pressure runner is connected with the emptying road of the bistable fluidic;The drill sleeve is connected by screw thread and drill bit Connect;Sealing ring is provided between the alternating pressure runner and outer shell;Sealing ring is provided between the outer shell and drill sleeve.
2. a kind of jetting type twisting drag reduction oscillator according to claim 1, it is characterised in that the alternating pressure runner The twice high-pressure fluid that bistable fluidic is exported is shunted respectively by flow manifold, per pass high-pressure fluid is divided into phase To twice high-pressure fluid, the four road high-pressure fluids formed after shunting are circumferentially uniform point on alternating pressure flow channel cross-section Cloth, the fluid in relative position occurs simultaneously, and the fluid of adjacent position is alternately present, and the shunting road high-pressure fluids of Hou tetra- enter Enter and act on torque piston into moment of torsion cylinder.
3. a kind of jetting type twisting drag reduction oscillator according to claim 2, it is characterised in that the moment of torsion cylinder is fixed on The four road high-pressure fluids formed after being shunted with alternating pressure runner are connected four are provided with outer shell, between moment of torsion cylinder and torque piston Individual cavity, when the high-pressure fluid of a certain relative position of alternating pressure runner occurs, the effect of torque piston liquid body pressure starts Rotate, rotated to after certain position along some direction, the high-pressure fluid of the relative position disappears, the high-pressure spray of another relative position Body is replaced, and now torque piston is started to rotate in the reverse direction by Fluid pressure effect, the moment of torsion cylinder and torque piston it Between be provided with bearing so that torque piston rotate it is more flexible.
4. according to a kind of any described jetting type twisting drag reduction oscillators of claim 1-2, it is characterised in that the moment of torsion is lived Plug is connected by tooth shape structure with drill sleeve, when torque piston rotates, and passes through tooth shape structural impact drill sleeve, driving drill sleeve rotation Turn.
5. according to a kind of any described jetting type twisting drag reduction oscillators of claim 1-2, it is characterised in that the outer shell with Drill sleeve is connected by fixture block.
6. according to a kind of any described jetting type twisting drag reduction oscillators of claim 1-2, it is characterised in that the fixture block with Spring is provided between drill sleeve, bolt is provided between the fixture block and outer shell.
CN201510172360.4A 2015-04-13 2015-04-13 A kind of jetting type twisting drag reduction oscillator CN104727748B (en)

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CN108708672B (en) * 2016-07-14 2019-09-06 蔡银花 A kind of circumferential direction axial vacuum impact speed-raising tool
CN106368609A (en) * 2016-11-09 2017-02-01 西南石油大学 Jet flow oscillating tool
CN106481273A (en) * 2016-11-09 2017-03-08 西南石油大学 Fluidic oscillation realizes the drilling tool of axial impact
CN110043191A (en) * 2019-04-23 2019-07-23 西南石油大学 It can produce the fluidic oscillation tool of axial compressive force pulse

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